---
title: IOUSBDevReqOOL
framework: IOKit
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 18.4+, macOS 10.0+]
path: iokit/iousbdevreqool
---

# IOUSBDevReqOOL

## Declaration

```occ
typedef struct IOUSBDevReqOOL {
    ...
} IOUSBDevReqOOL;
```

## Topics

### Instance Properties

- [bRequest](iokit/iousbdevreqool/1426371-brequest.md)
- [bmRequestType](iokit/iousbdevreqool/1425988-bmrequesttype.md)
- [pData](iokit/iousbdevreqool/1425996-pdata.md)
- [pipeRef](iokit/iousbdevreqool/1425791-piperef.md)
- [wIndex](iokit/iousbdevreqool/1426010-windex.md)
- [wLenDone](iokit/iousbdevreqool/1425490-wlendone.md)
- [wLength](iokit/iousbdevreqool/1426297-wlength.md)
- [wValue](iokit/iousbdevreqool/1425792-wvalue.md)